Emerson FB1100 - Connecting to COM1

FB1100 Flow Computer Instruction Manual
D301752X012
November 2023
40 Installation
2.13.1 Connecting to COM1
COM1 can be configured for RS-232, RS-485 (2-wire) or RS485 (4-wire) communications.
When connecting COM1 to another device using RS-232, use a cable with configurations
as shown in Figure 2-25:
Figure 2-25. Connecting a Device to COM1 Using RS-232
1
RS-232 port (COM1) on FB device
2
RS-232 port on external device
When connecting COM1 to another device using RS-485 (4-wire) use a cable with
configurations as shown in Figure 2-26:
Figure 2-26. Connecting a Device to COM1 Using RS-485 (4-wire)
1
RS-485 (4-wire) port (COM1) on FB device
2
RS-485 (4-wire) port on external device